#include <iostream>
#include "swap.h"
using namespace std;


int main(int argc, char **argv)
{
    int val1 = 10;
    int val2 = 20;
    cout << "Before swap:" <<endl;
    cout << "val1 = " << val1 << endl;
    cout << "val2 = " << val2 << endl;
    cout << "30" << endl;
    swap(val1, val2);
    cout << "After swap:" << endl;
    cout << "val1 = " << val1 << endl;
    cout << "val2 = " << val2 << endl;
}